Updated 8:40 am, Thursday, September 24, 2015

Dr. Rezik Saqer was arrested Tuesday night, Sept. 22, 2015, in connection with a car crash near Lake Conroe that left four members of a family dead over the weekend.

Dr. Rezik Saqer was arrested Tuesday night, Sept. 22, 2015, in connection with a car crash near Lake Conroe that left four members of a family dead over the weekend.

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The Integral Medical Clinic in The Woodlands, where Dr. Rezik Seqer practices medicine, is one of two pain-management clinics run by the doctor in the Houston area.

The Integral Medical Clinic in The Woodlands, where Dr. Rezik Seqer practices medicine, is one of two pain-management clinics run by the doctor in the Houston area.

Photo: Brett Coomer, Staff

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Tyler Dunman, chief prosecutor Montgomery County District Attorney's office, speaks during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said Wednesday that Saqer, a pain medicine doctor, has been arrested "on multiple charges" in connection with a crash Sunday in which a car driven by a retiree struck another vehicle, killing a family of four near Lake Conroe. He was arrested Tuesday night, according to the Montgomery County District Attorney's office. less

Tyler Dunman, chief prosecutor Montgomery County District Attorney's office, speaks during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County ... more

Photo: Brett Coomer, Houston Chronicle

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Montgomery County District Attorney Brett Ligon listens to questions during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said Wednesday that Saqer, a pain medicine doctor, has been arrested "on multiple charges" in connection with a crash Sunday in which a car driven by a retiree struck another vehicle, killing a family of four near Lake Conroe. He was arrested Tuesday night, according to the Montgomery County District Attorney's office. less

Montgomery County District Attorney Brett Ligon listens to questions during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said ... more

Photo: Brett Coomer, Houston Chronicle

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Montgomery County District Attorney Brett Ligon speaks during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said Wednesday that Saqer, a pain medicine doctor, has been arrested "on multiple charges" in connection with a crash Sunday in which a car driven by a retiree struck another vehicle, killing a family of four near Lake Conroe. He was arrested Tuesday night, according to the Montgomery County District Attorney's office. less

Montgomery County District Attorney Brett Ligon speaks during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said Wednesday ... more

Photo: Brett Coomer, Houston Chronicle

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DEA Agent Joe Arabit, right, speaks during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said Wednesday that Saqer, a pain medicine doctor, has been arrested "on multiple charges" in connection with a crash Sunday in which a car driven by a retiree struck another vehicle, killing a family of four near Lake Conroe. He was arrested Tuesday night, according to the Montgomery County District Attorney's office. less

DEA Agent Joe Arabit, right, speaks during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said Wednesday that Saqer, a pain ... more

Photo: Brett Coomer, Houston Chronicle

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Montgomery County District Attorney Brett Ligon, with Tyler Dunman, chief prosecutor, answers a question during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said Wednesday that Saqer, a pain medicine doctor, has been arrested "on multiple charges" in connection with a crash Sunday in which a car driven by a retiree struck another vehicle, killing a family of four near Lake Conroe. He was arrested Tuesday night, according to the Montgomery County District Attorney's office. less

Montgomery County District Attorney Brett Ligon, with Tyler Dunman, chief prosecutor, answers a question during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in ... more

Photo: Brett Coomer, Houston Chronicle

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Tyler Dunman, chief prosecutor Montgomery County District Attorney's office, left, with DEA Agent Joe Arabit, speaks during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said Wednesday that Saqer, a pain medicine doctor, has been arrested "on multiple charges" in connection with a crash Sunday in which a car driven by a retiree struck another vehicle, killing a family of four near Lake Conroe. He was arrested Tuesday night, according to the Montgomery County District Attorney's office. less

Montgomery County District Attorney Brett Ligon, with Tyler Dunman, chief prosecutor, answers a question during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in Conroe. Montgomery County prosecutors said Wednesday that Saqer, a pain medicine doctor, has been arrested "on multiple charges" in connection with a crash Sunday in which a car driven by a retiree struck another vehicle, killing a family of four near Lake Conroe. He was arrested Tuesday night, according to the Montgomery County District Attorney's office. less

Montgomery County District Attorney Brett Ligon, with Tyler Dunman, chief prosecutor, answers a question during a news conference announcing the arrest of Dr. Rezik Saqer on Wednesday, Sept. 23, 2015, in ... more

Photo: Brett Coomer, Houston Chronicle

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A photo of the Sedlmeier family hangs on the mailbox in front of their Walden home where a vigil was held on Monday, Sept. 21, 2015, after they were killed in a three-vehicle accident along Texas 105 in Conroe on Sunday. (Photo by Jerry Baker/Freelance)

A photo of the Sedlmeier family hangs on the mailbox in front of their Walden home where a vigil was held on Monday, Sept. 21, 2015, after they were killed in a three-vehicle accident along Texas 105 in Conroe

﻿Kate Dobyanski, right, and her son Cole, 9, ﻿are among friends and neighbors paying respects to the Sedlmeier family, killed Sunday in a horrific crash.﻿

﻿Kate Dobyanski, right, and her son Cole, 9, ﻿are among friends and neighbors paying respects to the Sedlmeier family, killed Sunday in a horrific crash.﻿

Photo: Jerry Baker, Freelance

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Friends and fellow residents of Walden, including Jaxson Bohac, 8, from left, his mom Jamie, and Gavin Cox, 8, pay their respects to the Sedlmeier family in front of their home in Walden on Monday, Sept. 21, 2015, where a vigil was held for the familyof four that was killed after a three-vehicle accident along Texas 105 in Conroe on Sunday. Gavin and Jaxson are 3rd grade classmates at Madeley Ranch Elem. (Photo by Jerry Baker/Freelance) less

Friends and fellow residents of Walden, including Jaxson Bohac, 8, from left, his mom Jamie, and Gavin Cox, 8, pay their respects to the Sedlmeier family in front of their home in Walden on Monday, Sept. 21, ... more

Photo: Jerry Baker, For The Houston Chronicle

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Friends and fellow residents of Walden stand together in prayer in front of the Sedlmeier home during a vigil on Monday, Sept. 21, 2015, for the familyof four that was killed after a three-vehicle accident along Texas 105 in Conroe on Sunday. (Photo by Jerry Baker/Freelance) less

Friends and fellow residents of Walden stand together in prayer in front of the Sedlmeier home during a vigil on Monday, Sept. 21, 2015, for the familyof four that was killed after a three-vehicle accident ... more

Photo: Jerry Baker, For The Houston Chronicle

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Margie Nantz, center, of Las Vegas, NV. and the mother of Mindy Sedlmeier, with her daughter Evie Zamudio, left, of Reno, NV., speaks during the vigil held in front of the Sedlmeier home in Walden on Monday, Sept. 21, 2015, for her daughter Mindy's family of four that was killed after a three-vehicle accident along Texas 105 in Conroe on Sunday. (Photo by Jerry Baker/Freelance) less

Margie Nantz, center, of Las Vegas, NV. and the mother of Mindy Sedlmeier, with her daughter Evie Zamudio, left, of Reno, NV., speaks during the vigil held in front of the Sedlmeier home in Walden on Monday, ... more

Photo: Jerry Baker, For The Houston Chronicle

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Photos of the Sedlmeier family hang on the mailbox in front of their Walden home where a vigil was held on Monday, Sept. 21, 2015, after they were killed in a three-vehicle accident along Texas 105 in Conroe on Sunday. (Photo by Jerry Baker/Freelance) less

Photos of the Sedlmeier family hang on the mailbox in front of their Walden home where a vigil was held on Monday, Sept. 21, 2015, after they were killed in a three-vehicle accident along Texas 105 in Conroe on ... more

Montgomery County prosecutors said Wednesday they have charged a pain medicine doctor with numerous drug offenses after they say he wrote too many prescriptions to a retiree who was charged in a fatal crash last weekend that killed a family of four.

Dr. Rezik Saqer was arrested Tuesday night and charged with four counts of fraudulent possession of a controlled substance, three counts of possession of a controlled substance and three counts of diversion of a controlled substance for personal use, court papers show.

At a press conference Wednesday, District Attorney Brett Ligon alleged that Saqer over-prescribed hydrocodone and other pain medication to the retiree, 68-year-old Ronald Cooper, who they said was under the influence at the time of the crash.

Cooper is charged with four counts of intoxicated manslaughter and two counts of intoxication assault following a three-vehicle fatal wreck that occurred early Sunday afternoon.

Dr. Rezik Saqer was arrested Tuesday night and charged with several drug charges, following investigation into fatal crash in Montgomery County over the weekend. District Attorney Brett Ligon alleged that Saqer over-prescribed hydrocodone and other pain m

Media: Brett Coomer

Ligon said authorities found empty bottles in Cooper's car for pain medication prescribed by Saqer, who has previously been disciplined by the Texas Medical Board.

His attorney could not be reached for comment Wednesday, and no one answered phone calls to Saqer's two medical offices.

Cooper's wife told The Chronicle on Monday that he has serious health issues that she believes might have caused him to become disoriented. Cooper's attorney said he suffers from a golf ball-sized brain tumor and possibly the beginnings of dementia.

Prosecutors have stressed that impairment can be caused by prescription or illegal drugs as well as by alcohol.

Conroe police have said they do not believe alcohol was a factor in the collision near Lake Conroe. Cooper's wife said he has not consumed alcohol during their 33 years of marriage.

Cooper had left Mt. Calvary Baptist in his Hyundai Azera and traveled only a few blocks west on Texas 105 when he struck the back of a Toyota Echo that was transporting an AirCanada Corp. pilot, Roland Sedlmeier; his missionary wife, Melinda; and their two preschool-aged children, Harley and Sofie.

The impact sent the Sedlmeiers' car spinning into oncoming traffic, where it collided with a Jeep Wrangler.

The Sedlmeiers, who had been going home from Crossroads Baptist Church in The Woodlands, did not survive.

Two teenagers — 16- and 15-year-old boys — in a Jeep Wrangler were injured, as was Cooper, who was arrested after the accident at a local hospital, police said.